Adams



LW. ADAMS.

Car Spring.

Patened May ,15, 1855.

AM;PIH0TQ-LITHU. 90. N.Y. (DSBQRNE'S PROCESS) *TocZZ whomz'tmag/@ovtcern: f Beit known that `I,iJ.W. ADAMS, `ofthe city, county, andStateofgNew York, have `:invented `anew and 1` Improved Spring for t "fRailroadlCars; andI "dohereby declare that "the following is a full, clear, and eXact dek scription `of the `same,freference being had` fo `the accompanying` drawings,` making a part ofthisspecificatiomin whichl l f l `Figi1re"l,fis`` anfexternalview of. my im- ""1p`roved spring. `2,is a vertical section `ofdittol l M 1 3" Similanlettersofreference indicate cor- "lresponfding partsin the two figures. t fh Thenatureof invention consists in the 1 employment of aseriesofat circular spring` plates of steel" placedfbetween the` convex "fand concavefsurfacesof suitable metallic "disks, so aslhto"` yieldjunder` pressure and jspring" into the convexl or concave form, `as t "willbe'hereafter fully shown `and described. `I* Toenable others slgilled in `theart to fully understand and` construct `my invention, I

will proceed to describe cular metallic plate of u `A,` represents a `cir .l or rod `B,attaclied to itslcenter. The upper "surface of the `plate A`,`\is concave, as shown "l inwFig.` 2. f1'.

WWB', B, B', are circular'plates convex on {"bothfsides and C, C, "C, are circular plates fjconcaveonbothsides."`

D,are`circulariflat springsconstructed of """steel plates of a proper thickness.

"The plates TB, C, `are fsolid andV ofisuflicient thickness to be perfectly rigid,pos t sessing no elasticity. {"The steel platesl), are i elast-ic s and" are placed between the concave f and circularplates B', C, in thefoll'owing. V, manner. Onthe upperfsurface ofthe plate there `are placed five steel plates D, and on top of these plates` a convex plate B', is ""placed, on thetop ofthis plate fB, there'are placed gfour plates Dyland on the top of @these plates a concaveplate C, is placed, having threeplates D,on` its `upper `surface l z u anden the top of thethree plates D, a jcon- `vex plate B, is placed having two platesvD,

` fonpits upper surface and on lthetvvfo plates l D, a concave plate-JC, isfpl'aced having one NTEDiSTA'TIQL@ENT orrrcn.

" t l flcmcnLAia'i/rmALLIc PLATE-SPRING. A

fspeihcatienibf Lettersfratentnor12,849, dated May15, 1855.

plate D, on its upper surface, on which' plate D, a convex plate B, is placed. The plates B, C, as well as the spring plates D, have circular apertures (an) at their centers, Y

through which apertures the pin orrod B, passes, see Fig. 2.` The sill piece E, of the car rests .upon the upper convex plate B', and the lower plate A, rests upon a cross piece or bolster F, of the truck By the above arrangementit will be seen that the weightof the car rests upon the steel 'spring platesD, and these plates will yield or give so as to produce the required elasticity and the concave plates c, prevent the spring plates from yielding beyond a` certain distanceso that they can not be strained and their elasticity impaired in consequence of being subjected to overpressure.

. Any numberof spring plates may be used.

I do not confine myself to the peculiar arrangement as herein shown, but a greater number is placed below and thus gradually decrease in number `from the bottom upward, so lthat the spring may increase in i i i i strength as it is depressed. z x suitable thickness, andhaving a vertical pin far preferable as t it possesses requisite strength `with sufficient elasticity.

Y I am aware that conical steel plate springs with radiating sections cut out, have been previously used for bufferfsprings, and I therefore do not claim these, but lVhat I claim as new and desire to secure The combinationand arrangement of one or more flat circular steel plates D, held in place4 by `a central pin B, andallowed to spring a` limited space, between solid condescribed. .t

Witnesses i JAs.GrEo. MASON,

WILLIAM Tuscia.

JOHN w. ADAMS. l 

